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Panera Bread should be known for its bread. After all, it’s in the name. But it’s pretty inarguable that the most beloved item at Panera has nothing to do with its bread — and everything to do with it’s decadent, creamy, and oh-so-cheesy macaroni and cheese. Costco members (sign up for a membership) will want to act fast, because this iconic Panera favorite is currently on sale at the warehouse store through July 30.